Colors and light wavelength tool
This little tool should help you get some reasonable logaritmic values.
Visible light goes between 390 and 750 nm.
Warning: This script is not 100% precise.
Lowest frequency:
nm
Highest frequency:
nm
Number of bands:
Precision:
(1-9)
390
410
430
450
470
490
520
540
570
590
620
650
680
720
750